Closure cap for tanks



Sept. 9, 1930. J MORGAN 1,775,318

CLOSURE CAP FOR TANKS Filed Feb. 8, 1929 lllllllulml 40 ATTOR F Y lit)JOSEPH L. lilltilllttillhl l', @F SHREVEPQRT, LUUISIANA, .ltfiSIGNOE orGEE-HALF. T MAR' F G. GALLAQHAN, Uh DLAS, TEXAS etosuian can run earnsApplication died February a, 19%. serial na'aaaaaa This inventionrelates to improvements in locks, more particularly locks. for fillercaps for tanks containing 11 uids.

The primary object ot the invention is the provision or a lockingarrangement for tiller caps for motor vehicle gasoline tanks to preventunauthorized removal of the fuel; also prevent filling of the tank incase of attempted theft of the vehicle.

Another object of the invention is to provide a lock of this. naturewhich is simple in construction and inexpensive of manufacture.

The invention will be clearly understood from a perusal of the followingdetailed de scription, taken in connection, with the accompanyingdrawings, forming part of this specification, in which:

Figure 1 is a side elevational view of the filler cap, partly brokenaway, and in position on a fuel tank,

Figure 2 is a horizontal sectional view,

taken along the line 22 of Figure 1, in the y direction of the arrows,

Figure 3 is a view similar to Figure 2, but showing the lugs of the capin a difierent position, the bottom plate of the cap removed, t

Figure 4 is a bottom view of the cap, the slidable lugs and. plate beingremoved, J

Figure 5 is a cross-sectional view'ofthe cap and a part of a tank,illustrating the method of connection of the cap with the tank,

Figure 6 is a horizontal detail sectional view, taken along the line 6-6of Figure 5, Figure 7 is a side elevational view of the key post of thelocking mechanism 'ofithe cover.

Fi ure 8 is a partial top plan view of a gasoline tank, showing theconstruction of the neck, Figure 9 being a cross-sectional view thereof,along the line 9-9 of Figure 8,

Figure 10 is a detail sectional view of a modified, form of In of thelock mechanism,

Figure 11 is a tional view of the tank neck and one lug, showing theprogressive movement of the I lug in operation of the lock mechanismofthe cap, and

ragmentary detail secsloped to a point 3, as will be hereinafter moreparticularl described. The neck includes recesses 4 or reception of thelugs 5. -These lugs are integrally formed with the central roundedportion 6 oi the ca 7. The portion '6 is bored for the in mechanism 8.

he tank neck, lock mechanism and lugs purpose o "seating the lockare incommon use and are described and illustrated merely ness in description.The invention comprises the slidable bolts lOWhich forms a means forlocking the cap in locked position on the neck.

for the purpose of clear.-

By reference to Figure 4:, it will be ob served that-the key post 8,which forms part of the lock mechanism, includes two pins 11 which, whenthe he 12 is turned, come into enga ement with t e recess ll in thebolts 10. etween the bolts is alao disposed a spring M, the oppositeends of the spring abutting the shoulder 15 of the bolts. A plate 16 isplaced over the spring 14 and holds the bolts in position.

The outer ends of the boltsare rounded and the inwardly-turned edge ofthe neck. In the lowest broken-line position of the bolt, as-

showninFigure 1l,the bolts have passed under the neck.

,In the operation ofv the cap, the lugs 5 vare first placed in alinementwith the re-' cesses 4, as shown in Figure 3 and the cap pressedinwardly. This will draw the bolts bevelled to enable the cap to be moreeasily lip. the spring 14 forcing the bolts outwardly.

7 bring a tighter grip of the lugs on the inner within the circumferenceof the bent-over portion A of the neck 2, and bring the lugs 5 below theportion'A. The ends of the bolts are then bearing against the part 3 ofthe inner edge or lip of the rim. The cap is then turned to the right,whereupon the bolts i will occupy the position shown in Figure 2, withthe lugs and bolts both underneath the In this pqsition, due to theangular relation of the lugs and bolts, it is impossible to remove thecap without the key. If the lugs are brought into alinement with therecesses 4, the bolts are still under the lip, and Vice 'versa.

In Figure 10 is shown a modified form of lug and wherein a spring B isemployed to portion of the neck. v

If an attempt is made to remove the cap without the proper key, the capwill rotate in anti-clockwise direction, whereas the two bolts 10 ofFigure 2 will make contact with the two fins 3 of Figure 9, therebyholding the two lugs 5 Figure 2 in position underneath lip of tank neck.This prevents removal of the cap as long as bolts are so engaged, whichwhen disengaged by 0 eration of proper key, bolts 10 Figure 2 will ewithby use of one hand.

filler neck and rotated from the registry podrawn from contact at?Figure 9, allowing cap to be further rotated in anti-clockwisedirection, until lugs 5 Figure 2 makes contact with fins 3 Figure 9 andin position in aperture 4 Figure 8 when at suchtime with bolts 10 stillwithdrawn by operation of key, cap may be lifted from neck of tank. Thiscan be accomplished by one operation of key in turning in anti-clockwisedirection with draws bolts and further turning bringing.

lugs in position in aperture 4 Figure 9 al-.

lowing entire device to be lifted from tank What is claimed as new is:

' In a lockin mechanism for filling tub caps, the combination with afilling tube having an inwardly extending notched flange,

a filler cap having a lug so located as to pass through the notchedportion of said flange when the lug and notch arebrought into registry,and when the cap is in position on the sition said lug will be heldbeneath the said flange, spring means on said lug for insuringfrictional engagement with said flange, a

pair ofbolts carried by the cap extendingin opposite directions andpermanently angularly removed from said lug, yielding means -'fornormally forcing said bblts apart so as to engage beneath the flange ofsaid filling "tube, and means for retracting said bolts so that the capmay be removed from the filler neck on bringing said lug and notch intoreg stry.

In testimony whereof I aflix my signature.

JOSEPH L. MORGAN.

